psd_ar (pyleoclim.utils.wavelet.psd_ar)
- pyleoclim.utils.wavelet.psd_ar(var_noise, freq, ar_params, f_sampling)[source]
Return the theoretical power spectral density (PSD) of an autoregressive model
- Parameters
var_noise (float) – the variance of the noise of the AR process
freq (array) – vector of frequency
ar_params (array) – autoregressive coefficients, not including zero-lag
f_sampling (float) – sampling frequency
- Returns
psd – power spectral density
- Return type
array